Figure 2 Diffusio-osmotic process for osmotic energy conversion Part a (top) is adapted with permission from REF. 21, Macmillan Publishers Limited. Part a (bottom) is adapted from REF. 61, courtesy of Bruno Bourgeois, b2infographie, France. Part b is reproduced with permission from REF. 29, American Chemical Society. Part c is reproduced with permission from REF. 22, Macmillan Publishers Limited. Part d is reproduced with permission from REF. 34, American Institute of Physics. Siria, A. et al. (2017) New avenues for the large-scale harvesting of blue energy Nat. Rev. Chem. Doi: 10.1038/s41570-017-0091